ASTROSAT CZTI

Data Quality Report

Orbit 20210411_A10_058T01_9000004298_level2

Creation date: 2021-04-17T11:17:15.867156
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_058T01_9000004298cztM0_level2_bc.evt modeM0/AS1A10_058T01_9000004298cztM0_level2_quad_clean.evt
Size (bytes)8,476,056,0002,163,827,520
Size7.9 GB 2.0 GB
Events in quadrant A35,014,54714,305,959
Events in quadrant B83,149,59914,019,496
Events in quadrant C74,012,34313,198,957
Events in quadrant D53,961,81313,349,914

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03274250
B04886420
C04633560
D03852870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031820
B031820
C031820
D031820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15565119951.281714%
B15565149683.191756%
C155651146649.421077%
D15565139462.535159%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 180782 155657 9 9 0.00% 0.01%
B 180782 155656 479 479 0.26% 0.31%
C 180782 155650 2105 2105 1.16% 1.35%
D 180782 155655 519 519 0.29% 0.33%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 96 599915 319.0 8791 8671 1853.5
A 8 192 340045 178.79 8791 8671 1853.5
A 13 254 293014 153.41 8791 8671 1853.5
B 6 159 43562285 26974.92 8660 8495 1614.6
B 6 36 3829843 2366.74 8660 8495 1614.6
B 3 64 1417043 872.38 8660 8495 1614.6
C 3 233 41673312 21710.13 8146 8137 1919.2
C 2 114 295363 149.66 8146 8137 1919.2
C 15 208 286164 144.87 8146 8137 1919.2
D 8 195 9324950 4834.43 8586 8352 1927.1
D 7 80 5071450 2627.27 8586 8352 1927.1
D 12 233 2036170 1052.25 8586 8352 1927.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter